GetCategoriesFromIdsUseCaseTest.kt

class GetCategoriesFromIdsUseCaseTest {
    private val categoriesRepository: CategoriesRepository = mockk(relaxed = true)

    private val getCategoriesFromIdsUseCase = GetCategoriesFromIdsUseCase(
        categoriesRepository = categoriesRepository
    )

    @Test
    fun `On invoke should return correct list of categories`() = runTest {
        // Given
        val child1CategoryId = Category.CATEGORY_PRO
        val child1: Category = mockk {
            every { categoryId } returns child1CategoryId
        }
        val child2CategoryId = CategoryId(id = -faker.number().randomNumber())
        val child2: Category = mockk {
            every { categoryId } returns child2CategoryId
        }

        val categoryTreeIds: List<CategoryId> = listOf(
            child1CategoryId,
            child2CategoryId,
        )

        val map = mapOf(
            child1CategoryId to child1,
            child2CategoryId to child2,
        )
        
        coEvery { categoriesRepository.getCategories() } returns map

        // When
        val result = getCategoriesFromIdsUseCase(categoryTreeIds)

        // Then
        assertContains(result, child1)
        assertContains(result, child2)

        coVerify { categoriesRepository.getCategories() }
    }
}